v2.7.0 — Interactive setup recovery

When setup is incomplete or credentials expire, the server can now fix it in-session instead of failing: a new setup_ga4_access flow uses the MCP elicitation capability to ask for the missing piece (property ID, credentials path, or a confirmation you've re-authenticated) through your client, then reconnects without a restart. Nothing sensitive passes through the model and no extra tokens are used; clients without elicitation get guided steps as before.

No configuration changes. Telemetry remains anonymous and opt-out (DISABLE_TELEMETRY=1 or DO_NOT_TRACK=1).